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Finding the Fourth Proportional to 9,794.70, 13,509.70 and 6,918.80

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Solution

The fourth proportional to 9,794.70, 13,509.70 and 6,918.80 is: 9,543.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,794.70 : 13,509.70 = 6,918.80 : x
  2. Step 2: Convert to fraction form
    9,794.70/13,509.70 = 6,918.80/x
  3. Step 3: Cross multiply
    9,794.70x = 13,509.70 × 6,918.80
  4. Step 4: Simplify right side
    9,794.70x = 93,470,912.36
  5. Step 5: Solve for x
    x = 93,470,912.36/9,794.70
  6. Step 6: Final answer
    x = 9,543.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.